A scientist wants to determine the age of the sand in a sandstone. which reason best explains why carbon-14 dating would not be an appropriate dating technique?
A. Nitrogen-14 has too long of a half life 
B. Carbon-14 is once living material 
C. Carbon-14 is not radioactive 
D. Nitrogen-14 is not radioactive
                                             
                                          
                                          
                                       